/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.tracker.imports.preprocess;

import java.util.Objects;
import java.util.Optional;
import org.hisp.dhis.tracker.imports.bundle.TrackerBundle;
import org.hisp.dhis.tracker.imports.domain.Event;
import org.hisp.dhis.tracker.imports.domain.User;
import org.springframework.stereotype.Component;

/**
 * This preprocessor is responsible to fill the assigned user with missing information.
 *
 * @author Enrico Colasante
 */
@Component
public class AssignedUserPreProcessor implements BundlePreProcessor {
  @Override
  public void process(TrackerBundle bundle) {
    for (Event event : bundle.getEvents()) {
      User assignedUser = event.getAssignedUser();

      if (Objects.isNull(assignedUser)) {
        return;
      }

      if (Objects.isNull(assignedUser.getUid())) {
        Optional<org.hisp.dhis.user.User> user =
            bundle.getPreheat().getUserByUsername(assignedUser.getUsername());
        user.ifPresent(u -> assignedUser.setUid(u.getUid()));
      }
      if (Objects.isNull(assignedUser.getUsername())) {
        Optional<org.hisp.dhis.user.User> user =
            bundle.getPreheat().getUserByUid(assignedUser.getUid());
        user.ifPresent(u -> assignedUser.setUsername(u.getUsername()));
      }
    }
  }
}
